blob: 4fa6b2733fd12f126684dab901eb6300cc58c930 [file] [log] [blame]
wdenkfe8c2802002-11-03 00:38:21 +00001/*
2 * (C) Copyright 2001
3 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25#include <ppc4xx.h>
26#include <asm/processor.h>
27
28/*
29 * include common flash code (for esd boards)
30 */
31#include "../common/flash.c"
32
33/*-----------------------------------------------------------------------
34 * Functions
35 */
36static ulong flash_get_size (vu_long *addr, flash_info_t *info);
37static void flash_get_offsets (ulong base, flash_info_t *info);
38
39/*-----------------------------------------------------------------------
40 */
41
42unsigned long flash_init (void)
43{
44 unsigned long size_b0, size_b1;
45 int i;
46 uint pbcr;
47 unsigned long base_b0, base_b1;
48
49 /* Init: no FLASHes known */
50 for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
51 flash_info[i].flash_id = FLASH_UNKNOWN;
52 }
53
54 /* Static FLASH Bank configuration here - FIXME XXX */
55
56 base_b0 = FLASH_BASE0_PRELIM;
57 size_b0 = flash_get_size((vu_long *)base_b0, &flash_info[0]);
58
59 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
60 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
61 size_b0, size_b0<<20);
62 }
63
64 base_b1 = FLASH_BASE1_PRELIM;
65 size_b1 = flash_get_size((vu_long *)base_b1, &flash_info[1]);
66
67 /* Re-do sizing to get full correct info */
68
69 if (size_b1)
70 {
71 mtdcr(ebccfga, pb0cr);
72 pbcr = mfdcr(ebccfgd);
73 mtdcr(ebccfga, pb0cr);
74 base_b1 = -size_b1;
75 pbcr = (pbcr & 0x0001ffff) | base_b1 | (((size_b1/1024/1024)-1)<<17);
76 mtdcr(ebccfgd, pbcr);
77 /* printf("pb1cr = %x\n", pbcr); */
78 }
79
80 if (size_b0)
81 {
82 mtdcr(ebccfga, pb1cr);
83 pbcr = mfdcr(ebccfgd);
84 mtdcr(ebccfga, pb1cr);
85 base_b0 = base_b1 - size_b0;
86 pbcr = (pbcr & 0x0001ffff) | base_b0 | (((size_b0/1024/1024)-1)<<17);
87 mtdcr(ebccfgd, pbcr);
88 /* printf("pb0cr = %x\n", pbcr); */
89 }
90
91 size_b0 = flash_get_size((vu_long *)base_b0, &flash_info[0]);
92
93 flash_get_offsets (base_b0, &flash_info[0]);
94
95 /* monitor protection ON by default */
96 (void)flash_protect(FLAG_PROTECT_SET,
97 base_b0+size_b0-CFG_MONITOR_LEN,
98 base_b0+size_b0-1,
99 &flash_info[0]);
100
101 if (size_b1) {
102 /* Re-do sizing to get full correct info */
103 size_b1 = flash_get_size((vu_long *)base_b1, &flash_info[1]);
104
105 flash_get_offsets (base_b1, &flash_info[1]);
106
107 /* monitor protection ON by default */
108 (void)flash_protect(FLAG_PROTECT_SET,
109 base_b1+size_b1-CFG_MONITOR_LEN,
110 base_b1+size_b1-1,
111 &flash_info[1]);
112 /* monitor protection OFF by default (one is enough) */
113 (void)flash_protect(FLAG_PROTECT_CLEAR,
114 base_b0+size_b0-CFG_MONITOR_LEN,
115 base_b0+size_b0-1,
116 &flash_info[0]);
117 } else {
118 flash_info[1].flash_id = FLASH_UNKNOWN;
119 flash_info[1].sector_count = -1;
120 }
121
122 flash_info[0].size = size_b0;
123 flash_info[1].size = size_b1;
124
125 return (size_b0 + size_b1);
126}